1146885881 has 8 divisors (see below), whose sum is σ = 1191532680. Its totient is φ = 1102579072.

The previous prime is 1146885863. The next prime is 1146885911. The reversal of 1146885881 is 1885886411.

It can be written as a sum of positive squares in 4 ways, for example, as 1401856 + 1145484025 = 1184^2 + 33845^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-1146885881 is a prime.

It is a super-2 number, since 2×1146885881² = 2630694448074292322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1146885811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78110 + ... + 91623.

It is an arithmetic number, because the mean of its divisors is an integer number (148941585).

Almost surely, 2^1146885881 is an apocalyptic number.

It is an amenable number.

1146885881 is a deficient number, since it is larger than the sum of its proper divisors (44646799).

1146885881 is a wasteful number, since it uses less digits than its factorization.

1146885881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169995.

The product of its digits is 491520, while the sum is 50.

The square root of 1146885881 is about 33865.7036099946. The cubic root of 1146885881 is about 1046.7430084259.

The spelling of 1146885881 in words is "one billion, one hundred forty-six million, eight hundred eighty-five thousand, eight hundred eighty-one".